[PATCH 11/20] regmap: _regmap_raw_read: Add handling of busses without bus->read()

[Mark Brown]

On Wed, Aug 12, 2015 at 02:34:12PM +0200, Markus Pargmann wrote:

> Is -EINVAL the right thing to return or would you prefer -ENOTSUPP?

-ENOTSUPP is going to be better.
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